CN102689500B - The method that useful part color is optimized - Google Patents
The method that useful part color is optimized Download PDFInfo
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- CN102689500B CN102689500B CN201210082565.XA CN201210082565A CN102689500B CN 102689500 B CN102689500 B CN 102689500B CN 201210082565 A CN201210082565 A CN 201210082565A CN 102689500 B CN102689500 B CN 102689500B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
- B41F31/02—Ducts, containers, supply or metering devices
- B41F31/022—Ink level control devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
- B41F33/04—Tripping devices or stop-motions
- B41F33/10—Tripping devices or stop-motions for starting or stopping operation of damping or inking units
Abstract
For the method for carrying out color adjustment at partition type ink device in the situation that at printing machine (8), try to achieve the color measured values in image-region (16) and it compared with the color value of attaching troops to a unit of printed original by means of the first color measurement instrument (1) for the image-region (16) on printable fabric (4) with color measuring district (11) of attaching troops to a unit, have deviation between color value and color measured values time by means of controlling computer (13) computing reference value. Calculate corresponding color value by means of described reference value for the color measuring district (11) of attaching troops to a unit of described image-region (16), color value is passed to the color measuring district (11) that belongs to accordingly similar image-region (16), detect the color measured values in color measuring district (11) and it compared with calibrated value and adjusting colo(u)r bias by the ink device of controlling computer (13) control printing machine (8) by means of the second color measurement instrument (14).
Description
Technical field
The present invention relates to a kind ofly carry out color adjustment for partition type ink device in printing machineMethod, wherein, for the image-region on printable fabric with the color measuring district of attaching troops to a unit by means ofOne color measurement instrument is tried to achieve color measured values in image-region and by described color measured values and printingThe color value of attaching troops to a unit of original copy is compared, and have deviation between this color value and color measured values timeCalculate reference value by means of controlling computer.
Background technology
In the time manufacturing printable fabric, must monitor constantly printing quality, particularly ink quality, so thatThe printed original of guaranteeing print product and client is corresponding. Be well known that for this reason, adopt color measurement instrument,It measures printable fabric and it is compared with the color value of printed original aspect color. Work as colorWhile having deviation between measured value and the color value of printed original, in the ink device of printing machine, trigger oneAdjustment process, to eliminate described deviation. On stock, usually not only there is a printing images,But there are multiple printing images, i.e. so-called useful part. By German laid-open document DE19525186A1 disclose a kind of in the time that useful part is printed to color measured values measure place determineMethod, wherein, similar useful part forms useful part group and has for first for each groupWith part and for color adjustment select suitable measurement place, then this measurement place is passed againAll useful part in giving described group. Therefore in all useful part in a group, select identicalMeasurement place and in the time of quality monitoring, use.
The quality monitoring of printable fabric not only can be in printing machine outside by means of outside color measurement instrumentCarry out, and can carry out by means of so-called online color measurement instrument in printing machine inside. Two kindsColor measurement instrument respectively has pluses and minuses. The large advantage that online color measurement instrument has is, in printing machineCan on each printable fabric, implement color measuring, but conventionally can only measure single point, because serving as reasonsCan not realize comprehensively and detecting in high print speed printing speed. Can in the case of outside color measurement instrumentWith, measure all images region on printable fabric, because unrestricted in this Measuring Time.But must first printable fabric be taken out from printing machine, and due to a large amount of printable fabrics for this reasonCan not measure aspect color each printable fabric. For this reason, adopting outsideThe situation of color measurement instrument under only take out lines sample and extract sample out with the time interval of determiningPage and it is measured on the color measurement instrument of described outside.
For example, by patent US7,884,926B2, US7,894,065B2 and US7,515,267 discloseOther color measuring device.
Summary of the invention
Task of the present invention is, by the advantage of outside color measurement instrument and inner color measurement instrumentAdvantage combines.
Use in the present invention the first color measurement instrument, it can detect the image-region on printable fabricIn color measured values. Because described image-region is relatively large, therefore this measured value detects needs moreMany time, thus described the first color measurement instrument is preferably placed at printing machine outside. Described image-region is excellentChoosing relates to the useful part on printable fabric, wherein, also configures a color to each useful part and surveysAmount bar. In described color measuring strips, comprising specific color measuring district, particularly panchromatic tune color surveysAmount district, it is corresponding to the color matching in described image-region. This means described color measuring stripsBetween painted in look and described image-region, exist (directly beyond all doubt) of univocality associated.Painted change in described image-region correspondingly acts on the painted change in described color measuring strips.Each image-region/the useful part existing on printable fabric also has corresponding color measuring strips. ?This, starting point is that identical image-region/useful part has identical color measuring strips. The present inventionPresent design is, the image-region in measurement image accurately aspect color, then for joiningCalculate corresponding reference value and described reference value is passed to other image-regions in the color measuring district belonging toOr its color measuring strips of attaching troops to a unit. For this reason, utilize the first color measurement instrument first for described image areaThe painted of the best tried to achieve in territory, and its mode is, by the color value of the painted and printed original of this image-regionCompare. Then the reference value of trying to achieve is like this passed to the color measuring district in identical image region, itsMode is, data are passed to the second color measurement instrument, and described the second color measurement instrument preferred arrangements existsIn printing machine and detect the color measuring district of described image-region in this printing machine. Then this colorMeasuring instrument is measured the color measured values in described color measuring district and by this color measured values and predeterminedReference value is compared and is carried out adjustment by the control in the ink device of printing machine and adjustment intervening measureDeviation between the color measured values detecting in reference value and color measuring strips.
Propose at this, the image-region with the color measuring district of attaching troops to a unit wraps on the width of printable fabricDraw together multiple ink-covered areas. Preferred panchromatic tune color measuring district belongs to described color measuring district. Method of the present inventionThe large advantage having is that, in order accurately to measure aspect color, the first color measurement instrument needn't detectThe whole specification width of printable fabric, but only need to detect single image-region as single useful portionPoint. This is particularly favourable in the situation that of large specification machine, does not deposit for described large specification machineAt the color measurement instrument that can correspondingly measure whole large specification printable fabric. Then in printing machine, borrowHelp to be configured to the second color measurement instrument of measuring beam and extending on the whole specification width of printing machineCarry out a measurement and have for each thus for all useful part by measuring color measuring stripsBy part detection and adjustment deviation. Also consider at this, on print direction, have certain faceLook falls, thus useful than printable fabric the trailing edge place of the useful part that makes seamed edge place before printable fabricPart has more slightly ink. Because can crossing over printable fabric width, the color matching in ink-covered area changes,But be not on print direction, therefore must when for color measuring strips computing reference value, consider shouldSituation. Because for the layer thickness of a kind of ink of all useful part can be at an ink-covered area only withShi Tigao or reduction, thus make to calculate corresponding predetermined for each single useful partBe worth compromise best as far as possible between printable result. For this reason, for existing in color measuring districtFull tone zone or also calculate following reference area for other reference area: described reference area is in the bestColored state in obtain. Described calculating in the control computer of printing machine causes: utilize printingThe second color measurement instrument in machine can detect whole specification width. Utilize this online color measurement instrument canAbove the color measuring strips automatically existing at production period, detect whole specification completely on printable fabricWidth. At this, all colours described reference value being passed in the color bar of similar useful part is surveyedAmount district. The structure of each useful part and position can by from printing prime DID try to achieve,Its mode is, by image recognition software with relatively carry out accordingly automatic useful part identification.
In addition propose, in order to eliminate the absolute error of different meter, described reference value is not only simpleGround passes to the second color measurement instrument by the first color measurement instrument, and adapts to phase by bearing calibrationAnswer the situation of color measurement instrument. For this object, need to utilize described the first and second color measuringsInstrument carries out disposable measurement to same printable fabric.
In addition propose, utilize the method also can check and regulate printed matter, i.e. so-called color managementEquilibrium. At this, replace printed original ground to adopt the page with so-called color management test resolution,Its analyzed processing. At this, will in color measuring strips, in the time correctly printing described test resolution, obtainValue as the reference value of other printing zones, in described other reference zones, do not print test resolution.Then can check described reference value or this reference value to adjust in this wise by color adjusting deviceJoint, makes also can without the multiple test resolution of concrete measurement in the situation that, realize the complete of printed matterUnanimously. Because test resolution is mainly made up of face screening, double exposure, therefore using color measuringIn all combinations that must exist in the situation of bar, comprise screened area and double exposure district on this test resolution.
In all these methods, make full use of, the first color measurement instrument needn't be measured whole undertaking the printing ofMaterial, and however also for all color measuring districts to be measured or image-region computing referenceValue, and then described image-region or color measuring strips can be by means of the second color measurement instrument unanimouslyProperty aspect tests, and described the second color measurement instrument is only carried out several point-like of color measuring stripsMeasure.
Brief description of the drawings
Describe and explain the present invention below in detail by means of two accompanying drawings. Accompanying drawing illustrates:
Fig. 1 be there are two useful part types printable fabric on outside color measurement instrument,
Fig. 2 is the seal with the color measurement instrument of operating desk, outside and the second color measurement instrument of insideBrush machine.
Detailed description of the invention
The first outside color measurement instrument 1 is shown separately in Fig. 1, there are the first useful part 16 HesThe printable fabric 4 of the second useful part 12 is placed on this outside color measurement instrument. Printable fabric4 on brace table 3 and have respectively useful part 16 and three Equations of The Second Kinds of three first kindThe useful part 12 of type. Above described brace table 3, arrange a color measuring beam 2, it has colorGage outfit 5. Described gage outfit 5 guides to printable fabric 4 tops by described color measuring beam 2, byCan detect the image-region of described useful part 12,16 in this gage outfit. In addition, give each useful portionDivide 12,16 configuration corresponding color measuring strips 11,17. Because described color measuring strips is having of attaching troops to a unitOn whole ink-covered areas by part, extend, therefore can be pushed away by the color measured values in useful part 12,16The respective color measured value of disconnected color measuring strips 11,17. Based on the measured value of the first color measurement instrument 1Can calculate best reference value, then send this reference value to printing machine 8 by communicating to connect 10In the second color measurement instrument 14. The calculating of described reference value or at the control computer 13 of printing machineIn otherwise carry out in computer 15 in operation.
In Fig. 2, can find out, operation computer 15 is in color measurement instrument 1 arranged beneath of described outsideIn a cabinet and can operate by the screen 9 that is configured to touch-screen. In this way and methodCan input setting value and described setting value can be passed to and be controlled computer 13 also by operation computer 15And further pass to printing machine 8 by communicating to connect 10. Printing machine 8 have an automatic sheet feeder 7,Multiple printing equipments and a paper receiver 6. The printable fabric 4 taking out from automatic sheet feeder 7 is at printing equipmentIn be printed and be placed in the stacking of paper receiver 6. An in the end printing equipment and described receiptsBetween paper device 6, arrange a second online color measurement instrument 14, its detection is printed in printing machine 8Color measuring strips 11,17 on each printable fabric 4. Then by described color measuring strips 11,17On the color measured values being detected like this compared with the reference value being provided by the first color measurement instrument 1And in situation devious, change the respective settings in the ink device of printing machine 8.
In the time calculating described reference value, carry out following process. The part of page 4, for example correspondingUseful part 12,16 is the figure in useful part 12,16 by means of the color measurement instrument 1 of described outsideAs measuring in region. Then data are sent to and control computer 13, also joining printed originalThe digital type image data that belong to import to described control computer from unshowned printing prime. ThenTry to achieve measured in useful part 12,16 by automatic image association by means of image recognition softwareImage segments. If the described digital type image packet from printing prime contains described useful part12, the information of 16 type, position and structure, by them for further calculating. Otherwise printDataller people can input by screen 9: should process which useful part 12,16. For tested image sheetEach useful part 12,16 of section tries to achieve one with reference to useful part, for example, in Fig. 1, try to achieve topmostTwo useful part 12 and 16. Described can be by screen 9 with reference to for example selecting of useful partIn upper demonstration printing images, be considered to good useful part, by measure once printing pattern orCheck page or calculate reference picture by the digital type image data from described printing primeOK. Corresponding reference picture by image association be passed to all other similar useful part 12,On 16 image position. For all different useful part images (for them by altimetric imageIn fragment, there is reference) execute after this point, utilize the color by Heidelberg printing machine joint-stock companyThe known method of measuring instrument ImageControl in tested image segments for each printing-ink and oilEach ink-covered area in device for ink calculates control parameter for regulating described ink device as a referenceValue. The reference value of being tried to achieve is like this exactly paintedly to the greatest extent can for attainable under given printing conditionCan be best trade off.
In next step, propose, tried to achieve reference value is painted for calculating, and it is at first stepIn the situation of the optimal coloring state of middle transmission, realize the reference area existing. Here required method also byThe color measurement instrument ImageControl of Heidelberg printing machine joint-stock company is known. At this, or pass throughSusceptibility based on rated value calculates or carries out the actual value adjustment of iteration. Result is for oftenIndividual reference area all obtains reference-LAB value. Now, by analyzing the digitized map from printing primeTry to achieve all image-regions of printable fabric 4 as information or the useful part information that comprises, they and quiltAltimetric image fragment forms similarly. If found the section similar with other useful part 12,16,By tried to achieve reference-LAB value by the reference in the color measuring strips 11,17 of initial useful partIn district, be delivered to the similar survey existing there in the color measuring strips 11,17 of other useful partIn amount district. Thus, in the useful part arrangement transverse to print direction rule, now oftenIn individual ink-covered area, be provided for for every kind of color the reference value that color is adjusted. Then, described reference value canBy control computer 13 black key correctly (zonenrichtig) pass to the second color measurement instrument 14, instituteState the second color measurement instrument and can on whole width, automatically measure printed pages 4 in printing machine 8. ?In the situation of full tone zone, must need to use reference value. What form in screening formula or by process ink hasWith in the situation of part 12,16 advantageously, will be present in the reference value of color measuring strips 11,17In screening look district, gray color district and double exposure look district pass to the second color measurement instrument 14 and adjustWhole.
If print as shown in Figure 1 different useful part 12,16, must be for each useful portionDivide 12,16 to implement the second method steps. For this reason, if desired must be by means of the first color measurement instrument 1Measure multiplely, wherein, the result of sub-step or must black key correctly pass to color surveysMeasure instrument 14 or must in control computer 13, form virtual total page. At next method stepIn also proofread and correct because be delivered to the second color measuring with reference to value from the first color measurement instrument 1Result visual described on instrument 14 time also can worsen each other by two color measurement instrument absolute value deviations.In order to compensate this effect, described the first color measurement instrument 1 can also will except the reference value of reference areaIts color measured values is further transmitted in the control parameter calculating there or to this alternatively willThe reference quantity of the color sensitivity calculating and tested page 4, for example page number further conduction toThe second color measurement instrument 14. Described the second color measurement instrument 14 then measure same page 4 or from controlIn the measurement data memory of computer 13, recall corresponding measurement data and the color measuring by oneselfValue and control parameter (described control parameter directly transmitted otherwise by means of through transmit sensitivityDegree calculates) try to achieve oneself reference value for each reference area.
In order to calibrate, also can utilize printing machine 8 to print a test resolution for color management,So that the balance of the OK state for example adjusting there transverse to print direction. At this, headFirst must utilize the Image Adjusting of the first color measurement instrument 1 to regulate in this wise painted, make described testWithin the tolerance of chart in making every effort to reach. Then the survey from described test resolution by the value therefrom drawingIn amount bar region as with reference to value storage and pass to similar district. Must be except panchromatic at thisOutside tune, also transmit screening color harmony double exposure district. In the time that described all districts all have minimum deviation,Can be with test resolution painted consistent as far as possible best. In order to try to achieve best ink-covered area opening (China inkKey opening), can use and optimize or approach method at this, described method is being controlled fortune on computer 13OK.
Therefore, utilize the present invention can utilize outside color measurement instrument 1 (it can measure in image,But can not detect whole printable fabric 4), in printing machine 8 at all color measuring strips 11,17In improve color measuring by means of the second color measurement instrument 14.
Reference numeral table
The first color measurement instrument of 1 outside
2 color measuring beams
3 brace tables
4 printable fabrics
5 gage outfits
6 paper receivers
7 automatic sheet feeders
8 page printers
9 screens
10 communication connections
The color measuring strips of 11 first useful part
12 second useful part
14 the second online color measurement instruments
15 operation computers
16 first useful part
The color measuring strips of 17 second useful part
Claims (10)
1. for carry out color adjustment at partition type ink device in the situation that at printing machine (8)Method, wherein, for the image-region (16) on printable fabric (4) with the color measuring district of attaching troops to a unitTry to achieve the color measured values in this image-region (16) and incite somebody to action by means of the first color measurement instrument (1)It is compared with the color value of attaching troops to a unit of printed original, and at described color value and described color measuringWhile having deviation between value, by means of controlling computer (13) computing reference value, it is characterized in that, byCalculate corresponding face in described reference value for the color measuring district of attaching troops to a unit of described image-region (16)Colour, passes to corresponding color value the color that belongs to accordingly similar image-region (16)Measurement zone, detects the color measured values in described color measuring district by means of the second color measurement instrument (14)And it is compared with corresponding color value and control by described control computer (13)The ink device of printing machine (8) is being adjusted colo(u)r bias.
2. according to the method for claim 1, it is characterized in that, by means of being arranged in printing machine (8)Outside color measurement instrument (1) comes in detected image region (16) for having and attach troops to a unit on printable fabricThe image-region (16) in the color measuring district color measured values of trying to achieve.
3. according to the method for claim 1 or 2, it is characterized in that, in printing machine (8)Color measurement instrument (14) detect the color measured values in described color measuring district.
4. according to the method for claim 1 or 2, it is characterized in that thering is the color measuring district of attaching troops to a unitImage-region (16) comprise multiple ink-covered areas.
5. according to the method for claim 1 or 2, it is characterized in that, described in the color measuring district of attaching troops to a unitBe panchromatic tune color measuring district, calculate by means of described reference value for described color measuring district of attaching troops to a unitCorresponding value.
6. according to the method for claim 1 or 2, it is characterized in that described similar image-region (16)It is the identical printed matter useful part on printable fabric (4).
7. according to the method for claim 1 or 2, it is characterized in that, survey by means of described the second colorAmount instrument (14) detects the color in described color measuring district on the whole specification width of printable fabric (4)Measured value and described the first color measurement instrument (1) only detect single image-region (16).
8. according to the method for claim 1 or 2, it is characterized in that, described printed original is by from sealThe DID of brush prime forms.
9. according to the method for claim 1 or 2, it is characterized in that, at the upper tool of printable fabric (4)Have in the situation of multiple different useful part (12,16) and carry out multiple calculating and transmittance process.
10. according to the method for claim 1 or 2, it is characterized in that, in the time that the method starts, carry outUseful part detect, in the situation that measuring in image-region (16) with reference to value from firstThe second color that color measurement instrument (1) is delivered to for measuring at color measuring strips (11) is surveyedWhen amount instrument (14) is upper, carries out and proofread and correct to adapt to last color measurement instrument, and utilize for this reason this twoIndividual color measurement instrument (1,14) detects same printable fabric (4).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011014928.7 | 2011-03-24 | ||
| DE102011014928 | 2011-03-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102689500A CN102689500A (en) | 2012-09-26 |
| CN102689500B true CN102689500B (en) | 2016-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210082565.XA Active CN102689500B (en) | 2011-03-24 | 2012-03-26 | The method that useful part color is optimized |
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| Country | Link |
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| CN (1) | CN102689500B (en) |
| DE (1) | DE102012004482A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102991122B (en) * | 2012-11-20 | 2016-06-22 | 北京华夏视科图像技术有限公司 | Mass colour controls system and control method thereof |
| DE102013010970A1 (en) * | 2013-07-01 | 2015-01-08 | Heidelberger Druckmaschinen Ag | Specially screened gray field |
| DE102014220361A1 (en) * | 2013-10-25 | 2015-04-30 | Heidelberger Druckmaschinen Aktiengesellschaft | Proof quality control |
| CN107181892B (en) * | 2016-03-11 | 2020-01-17 | 海德堡印刷机械股份公司 | Correction of color deviation in digital printing press |
| DE102016109392A1 (en) * | 2016-05-23 | 2017-11-23 | Manroland Web Systems Gmbh | Method for using a printing process to produce a printed product |
| DE102018216442A1 (en) * | 2018-09-26 | 2020-03-26 | Heidelberger Druckmaschinen Ag | Register measurement without register marks |
| DE102019200185A1 (en) * | 2019-01-09 | 2020-07-09 | Heidelberger Druckmaschinen Ag | Color compensation in offset printing |
| CN110802950B (en) * | 2019-05-23 | 2021-06-15 | 深圳圣德京粤科技有限公司 | Method for adjusting color deviation of digital printing |
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| US4200932A (en) * | 1977-06-25 | 1980-04-29 | Roland Offsetmaschinenfabrik Faber & Schleicher Ag. | Means for the control and regulation of the printing process on printing presses |
| US4874247A (en) * | 1986-12-08 | 1989-10-17 | Komori Printing Machinery Co., Ltd. | Measurement position synchronization method for a scanning densitometer |
| DE19525186A1 (en) * | 1995-07-11 | 1997-01-16 | Heidelberger Druckmasch Ag | Measuring point determining process for sampling printed products - involves grouping like requirements and setting position for each group |
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| CN101421109A (en) * | 2006-03-28 | 2009-04-29 | 柯尼格及包尔公开股份有限公司 | Method for setting an inking unit of a printing press |
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2012
- 2012-03-05 DE DE201210004482 patent/DE102012004482A1/en active Pending
- 2012-03-26 CN CN201210082565.XA patent/CN102689500B/en active Active
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| US4200932A (en) * | 1977-06-25 | 1980-04-29 | Roland Offsetmaschinenfabrik Faber & Schleicher Ag. | Means for the control and regulation of the printing process on printing presses |
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| US4874247A (en) * | 1986-12-08 | 1989-10-17 | Komori Printing Machinery Co., Ltd. | Measurement position synchronization method for a scanning densitometer |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN102689500A (en) | 2012-09-26 |
| DE102012004482A1 (en) | 2012-09-27 |
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